CVE-2026-105759 | BDVDB-2026-383039 Detail

Description#

vLLM is an inference and serving engine for large language models. Prior to 0.30.0, the Rust frontend's track_http_metrics middleware records the raw HTTP method token as a Prometheus label for requests reaching registered routes. An unauthenticated attacker can send unique arbitrary method tokens to unguarded routes such as /tokenize, causing Prometheus's Family::get_or_create function to permanently create counter and histogram label sets. Those label sets increase process memory usage and enlarge the /metrics response until the service or monitoring path is exhausted. This issue is fixed in version 0.30.0.

Impact#

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Exploit#

History#

1. Version 12026-10-05Record published in the CVE List.
2. Version 22026-10-06Most recent update recorded in the CVE List.